Gate valve for irrigation pipes



June 14, 1960 F. J. HOFFKNECHT 2,940,723

GATE VALVE FOR IRRIGATION PIREs Filed June 24, 1958 25 INVENTOR :t ,l yl l 24 4 26 Z/ ATTORNEYS nited States Patent GATE VALVE FOR IRRIGATIONPIPES Frank J. Hoiknecht, Rte. 3, Box 209, Merced, Calif.

Filed June 24, 1958, Ser. No. '744,106 2 Claims. (Cl. 251-147) Thisinvention relates to a gate valve for irrigation pipes, and has as itsprimary object the provision ofan improved gate and showing asubstantially watertight closure when in closed position, but Iwhich isreadily movable to open position with a minimum of effort and diiiculty.

An additional object of the invention resides in the provision of animproved sealing construction including a rubber diaphragm or gasket,and means for securing the same in sealing relation with the end of thepipe.

A further important object of the invention resides in the provision ofanchoring anges associated with the gate per se, and showing a tightmortar filled joint with the gate in t-he end of the pipe -to which itis applied.

Still another object 'of the invention is the provision of a device ofthis character which is sturdy and durable in construction, reliable andeiiicient in operation and relatively simple and inexpensive tomanufacture, assemble and install.

Still other objects reside'in the combinations of elements, arrangementsof parts, and lfeatures of construction, all as will be more fullypointed out hereinafter, and disclosed in the accompanying drawing.

lIn the drawing:

Figure 1 is a top plan view of one form of gate or gate valve embodyingfeatures of the instant invention, shown as applied to a pipe.

Figure 2 is an enlarged -front elevational view of the gate of Figure 1.

Figure 3 is an enlarged sectional view taken substantially along the`line 3-3 of Figure 1 as viewed in the direction indicated by thearrows.

Figure 4 is an enlarged sectional view taken substantially along theline 4-4 of Figure 2 as viewed in the direction indicated by the arrows.

Similar reference characters refer to similar parts throughout theseveral views of the drawing.

Having reference now to the drawing in detail, the valve assembly of theinstant invention is generally indicated at 10, and comprises a valveseat member 11 and a valve or gate member 12. The valve seat member 11includes a substantially rectangular plate 13, which is provided with acentral circular opening 14, the edges of which are inwardly turned asat 1S to provide ilanges, to which is secured a tubular collar 16, inany desired manner as by welding. The upper and lower edges of the plate13 are outwardly turned into lian-ge 18 to provide horizontal anges 18,the ends of which are downwardly turned to provide vertical anges 19,the purpose of which will be more fully described hereinafter.

The side edges of the plate 13 are oppositely curled or reverted asindicated at 2i), to provide guide tracks for the gate member 12.

The inner edges of the reverted portions 20 are attened as shown at 21(see Fig. 4) to provide guide tracks against which rest the obliquelyangled side edges 22 of a front plate 23, which comprises the mainelement Patented June 14, 1,960

of the valve or gate member 12. The plate 23 is provided with a centralaperture 25, having an outwardly extending ange 26, the opening beingclosed by a rub ber diaphragm of `relatively thick rubber 27, the sideedges of which are secured in theinturned ends 28 of the oibliquclyangled edges 22 and clamped thereby.A The top edge of the rubberdiaphragm 27 extends forwardly Vand outwardly over a lip 29 at the topof the gate or valve, which lip serves -as a hand grip for raising andlowering the valve to open and close the same, and the-,edge 30 of theportion 29 is inwardly reverted and c'larnped'over the upperedge of therubber diaphragm 27. y v Q 'The rubber diaphragm 27 has ailixedto thecenter thereof a metallic disk 35, for reinforcing purposes, the diskbeing engaged by a transverse strip 36, one end of which is suitablysecured as by spot welding or rivets 37 to one side of the plate 23,while the other end is releasably secured interiorly of a retainingstrip 38 which is suitably secured as by means of rivets 39 at itsopposite -ends to the outer face of the plate 23. A clamping rod 40 isprovided which has an otfset central portion 41 in alignment with thestrip 36, and a right angularly disposed vhandle portion 42. The rod 40is held in position by upper and lower bearing strips 43 and 44 whichare secured in position as by means of rivets 45 and 46 respectively tothe front plate 23.

In the assembly of the device the collar 16 is so dimensioned as to itsnugly within the interior of a conventional irrigating pipe P, which isprovided with the customary reduced end 50, which seats exteriorly 'ofthe colla-r 16.

The interior formed by the ilanges 18 and 19 is solidly packed with-mortar M. Suitable flanges 51 are also provided along the sides of theplate 2-3, as best shown in Figure 4, and have inwardly turnedextremities 52, the anges 5=1 and 52 corresponding in configuration anddimensions to the flanges 18 and 19, and serving a similar purpose alongthe side edges of the device, mortar also bein-g iirmly packed betweenthese anges and the reduced end 50 of lthe pipe.

In the use and operation of the device when it is desired to open thevalve, the handle 42 of rod 40 is moved to such a position that pressureis no longer exerted by the offset portion 41 against the strip 36, andconsequently the rubber diaphragm 27, and the gate may be opened byraising the lip 29.

When the gate is closed, movement of the handle to a position to engagethe offset portion 41 against the strip`36 will compress the disk 35,and press the rubber diaphragm 27 partially into the opening 14 toeffectively seal the end of the pipe P.

By virtue of the flanges 18 and 19 and 51 and 52, and the mortar packinginteriorly thereof and around the reduced end 50 of the pipe, a firm andsecure and substantially completely watertight seal is provided.

yFrom the foregoing it will now be seen that there is herein provided adevice 1which accomplishes all of the objects of this invention, andothers, including many advantages of Igreat practical utility andcommercial importance.

As many embodiments may be made of this inventive concept, and as manymodifications may be made in the embodiment herein before shown anddescribed, it is to be understood that all matter herein is to beinterpreted merely as illustrative and not in a limiting sense.

What is claimed is:

1. In a gate valve structure, the combination of a rectangular valveseat plate having -a cent-ral opening, a ange surrounding said centralopening and adapted to seat interiorly of an irrigation pipe, angesoutwardly turned from the side edges of said plate, a gate valveslidalble within said outwardly turned flanges, additional angesinwardly turned from the top and bottom of said plate adapted vtooverlie the 4end of said pipe vto `provide mortar retaining meansforsealing said valve Seat member'to said pipe, said tlastdnentionedyan-ges-,having inturned lend, `portions and additional inwardly turnedflanges yseeilred `to the inner edges of the side of said plate. toprovide .additional mortarretaining means. i i2, IIn a 'gate valvestructure, Ythe combination of a rectang'ular valve seat plate havingacentral opening, a ange surrounding-said central opening and adapted-to seat interiorlyzof an irrigation rpipe, anges outwardly turned, fromt-heiside edges of 'said plate, a gate valve slidable within saidoutwardly turned flanges, A.additional flanges inwardly turned from 'thetop and bottoni of said plate adapted to ovevrlie the end of said -pipeto provide mortar retaining means for sealing said valve seat member tosaid pipe, said last mentioned flanges having in-A turned end portionsfor sealing said Valve seat member to said pipe, said last mentionedflanges having inturned end portions 4and additional inwardly turnedanges secured to the inner edges of the side of said plate to provideadditional mortar retaining means, said additional 1 anges havinginturned end portions.

References Cited in the tile of this patent i UNITED STATES PATENTS iKingham July 27, 1926 Seitz ."Jan.l 10, 1905

